JP5931575B2 - Indirect hot wire gripping tool - Google Patents

Description

  The present invention relates to an indirect hot wire gripping tool mainly used in indirect hot wire work in the case of maintenance of a charged overhead electric wire and its electrical equipment.

  In the indirect hot wire operation, an insulating YATCO has been conventionally used to hold an overhead electric wire and its accessories. FIG. 5 shows an example of an insulating jacket as a conventional indirect hot wire gripping tool. As shown in this figure, the insulating jacket 40 is composed of a pipe-shaped synthetic resin insulating operating rod 44 having a required length, a pair of fixed gripping pieces 41 and a movable gripping piece 42 assembled at the tip thereof. An insulating actuating rod 44 connected to the base end side of the movable gripping piece 42 via a connecting pin 43, and a substantially U-shaped mounting member provided so as to sandwich the outer periphery of the operating rod 45 It is mainly composed of a substantially U-shaped operating lever 47 connected to the operating rod 45 via a fixed connecting pin 46. By operating the operation lever 47, the movable gripping piece 42 is rotated in a direction approaching the fixed gripping piece 41, and thereby a gripped object such as an overhead electric wire or an accessory can be gripped.

  When an operator grips an overhead wire or the like using this insulated jacket, the operator operates the operation lever 47 with his / her own gripping force to grip, twist, or move the overhead wire or the like only with a force corresponding to the gripping force. The operation is performed.

Japanese Utility Model Publication No. 3-60810 JP 2010-239783 A

  However, it is difficult to move or twist an aerial wire or the like at the tip of one work bar only with the gripping force of the operator who operates the operation lever of the conventional insulated jacket.

  In order to solve the above-described problems, an object of the present invention is to provide an indirect live wire gripping tool that allows an operator to easily and reliably perform so-called indirect live wire work such as gripping, moving, and twisting an overhead electric wire.

According to the present invention, the object is that according to the present invention, a pair of gripping pieces that can be rotated in the direction of contact with each other by a connecting pin, a connecting portion fixed to a base end portion of each gripping piece, and each connecting portion And a pair of insulating rods connected at one end to each other, and the angle at which each pair of gripping pieces tilts with respect to the axis of each insulating rod can be changed stepwise via the connecting portion. This is achieved by an indirect hot-line gripping tool characterized by being made.

  According to the present invention, since one insulating rod is connected to each of the pair of gripping pieces so that these insulating rods can be operated, the operator is easier and more reliable than the conventional indirect hot wire gripping tool. You can grip, move, and twist an overhead electric wire.

It is a figure which shows one Embodiment of the indirect hot wire holding tool of this invention, and its partial modification. It is a figure which shows another example of embodiment of the indirect hot wire holding | grip tool of this invention. FIG. 3 is a detailed view of a direction changing unit of the embodiment shown in FIG. 2. It is detail drawing of another example of the direction change part of embodiment shown in FIG. It is a figure which shows an example of the front-end tool with which the holding piece of the indirect hot wire holding tool of this invention is mounted | worn. It is a perspective view which shows the use condition of the indirect hot wire holding | grip tool of this invention equipped with the front-end tool shown in FIG. It is a figure which shows an example of the conventional indirect hot wire holding tool.

  Next, an embodiment of the indirect hot wire gripping tool of the present invention will be described in detail. FIG. 1: has shown one Embodiment of the indirect hot wire holding | grip tool of this invention, (a) is a front view, (b) has further shown the front view of the modification provided with the locking mechanism. In the modification of FIG. 1B, the base end side of the insulating rod is not substantially different from the example shown in FIG.

  As shown in FIG. 1A, the indirect hot wire gripping tool 1 of the present embodiment includes a pair of gripping pieces 10 and 11 that are rotatably connected by a connecting pin 12, and the gripping pieces 10 and 11. Insulating rods 13 and 14 respectively connected to the base end side of each. In FIG. 1, the outer shape of the pair of gripping pieces 10, 11 on the tip side of the connecting pin 12 is the tip of the pair of gripping pieces 61, 62 of the conventional indirect hot wire gripping tool (Yatco) shown in FIG. 7. Although illustrated in a shape substantially equivalent to the portion, the outer shape is not particularly limited as long as an overhead electric wire or the like can be gripped in the indirect hot wire operation.

  Insulating rods 13 and 14 in the embodiment of FIG. 1 are long, electrically insulating rod-like bodies, and in the middle region, draining rods 18 and 18 are provided at an appropriate interval, and their proximal ends Grip parts 15 and 16 are provided in the part. The total length of the insulating rods 13 and 14 can be set as appropriate. In addition, the cross-sectional shape of the insulating rods 13 and 14 can be set as appropriate, for example, circular or elliptical in consideration of ease of gripping by the operator. Furthermore, the material of the insulating rods 13 and 14 is not particularly limited as long as they have electrical insulating properties, and FRP or the like is usually used.

  The pair of gripping pieces 10 and 11 and the insulating rods 13 and 14 can be connected by a conventionally known method such as adhesion, screwing, or welding. Moreover, you may connect these so that attachment or detachment is possible suitably.

  As shown in FIG. 1B, the lock mechanism 20 is provided in the space between the insulating rods 13 and 14 as described above. As the lock mechanism portion 20, a conventionally known one can be used. As a specific example of such a lock mechanism portion 20, a claw rack (not shown) formed of a rod member 21 and a sheath member 22 and formed inside the sheath member 22 at a portion where the lock mechanism portion 20 is inserted is provided. A member adapted to engage with a claw (not shown) inside the sheath member 22 can be used. In this specific example, an urging means such as a spring is further used, the rod member 21 is inserted into the sheath member 22 against the urging force of the means, and the engagement of the claw with the claw rack is released by an appropriate method. In this case, the rod member 21 is preferably configured to automatically jump out of the sheath member 22 by the biasing force. In FIG. 1B, the configuration other than the lock mechanism 20 is essentially the same as that of the embodiment shown in FIG.

  FIG. 2 shows another example of the embodiment of the indirect hot-line gripping tool of the present invention. 3 is a partially enlarged view of the embodiment shown in FIG. 2, in which (a) is a front view and (b) is a side view showing an AA arrow view. In the embodiments shown in these drawings, connecting portions 231 and 232 are provided on the base end side with respect to the connecting pin 12 of the pair of gripping pieces 10 and 11, and the direction thereof can be changed in the direction in which they come in contact with and away from each other. ing.

  The connecting portions 231 and 232 in the present embodiment are the same-shaped and same-sized fan-shaped plate portions 24 and 28 that are mirror images of each other, and the distal ends of the insulating rods 13 and 14 that are connected to the fan-shaped plate portions 24 and 28. It consists of. The fan-shaped plate portions 24 and 28 have first through holes 25 and 29 penetrating in the thickness direction near the connecting pin 12, respectively, and the thicknesses of the fan-shaped plate portions 24 and 28 on the base end side. Second through holes 26, 26,..., 30, 30,. The second through holes 26 and 30 are arranged at equal intervals along the arcs of the fan-shaped plate portions 24 and 28. The diameters of the first through holes 25 and 29 and the second through holes 26 and 30 are substantially equal.

  As shown in FIG. 3B, the tip portions of the insulating rods 13 and 14 in the present embodiment are formed into a flat plate shape having a thickness relatively smaller than that of the intermediate region to form plate-like portions 13a and 14a. Bolt insertion holes 13b, 13c; 14b, 14c penetrating in the thickness direction are provided near both ends of the plate-like portions 13a, 14a in the length direction. Each bolt insertion hole 13b, 13c; 14b, 14c is normally set to a hole diameter substantially equal to that of the first through holes 25, 29 and the second through holes 26, 30.

  Two bolt insertion holes 13b, 13c; 14b; 14c in the plate-like portions 13a, 14a at the distal end of the insulating rods 13, 14 are connected to the first through holes 25, 29 in the fan-like plate bodies 24, 28 and a plurality of second through holes. The holes 26, 26,..., 30, 30,... Are aligned and connected using bolts 31 and nuts 30, so that a pair of gripping pieces 10, 11 and insulating rods 13, 14 are connected to each other. In addition, the combination of the first through holes 25 and 29 and the second through holes 26 and 30 connects the insulating rods 13 and 14 to the pair of gripping pieces 10 and 11 so as to form a large letter shape. It is also possible to connect the insulating rods 13 and 14 between the first through holes 25 and 29 and, for example, the lower or upper second through holes 26 and 30 as viewed in FIG. As a result, the direction of the pair of gripping pieces 10 and 11 can be tilted along the direction in which they are contacted and separated with respect to the axial direction of the insulating rods 13 and 14.

  FIG. 4 shows another modification of the connecting portion in the embodiment of FIG. The connecting portions 231 and 232 of the modified example shown in this figure are provided with fan-like plate portions 24 and 28 similar to the embodiment shown in FIG. 3, but the first through hole and the second through hole formed there. The shape and arrangement of the holes are different. That is, the first through holes 31, 31,... 33, 33,... In the example of FIG. It arrange | positions at equal intervals and the 2nd through-holes 32 and 34 are formed in the shape of a long hole along the arc on the base end side.

  As for the insulating rods 13 and 14 in the modification of FIG. 4, the overall length of the plate-like portions 13a and 14a and the pitch between the bolt insertion holes 13b and 13c and the pitch between 14b and 14c are the first through holes 31 and 33 and the second through holes. It is changed according to the arrangement of 32 and 34. Other configurations are the same as shown in FIG.

  Also in the modification of FIG. 4, the insulating rods 13 and 14 are placed at predetermined positions of the arbitrary first through holes 31 and 33 and the second through holes 32 and 34 adjacent to the through holes in the fan-shaped plate portions 24 and 28, respectively. By connecting with bolts and nuts, the insulating rods 13 and 14 are arranged in a substantially square shape as in the case of the embodiment of FIG. , 14 with respect to the axial direction.

  In the embodiment of FIG. 3 and the modification of FIG. 4, the lock mechanism 20 can be provided between the two insulating rods 13 and 14 as shown in FIG. The lock mechanism 20 is preferably configured so that the stroke of the rod member 21 can be adjusted by the arrangement of the two insulating rods 13 and 14.

  Further, in the indirect hot wire gripping tool of the present invention, in addition to the connecting portion for tilting a pair of gripping pieces along the contact / separation direction, a direction perpendicular to the direction (work) It is also possible to provide a refracting portion that can be refracted in the left-right direction as viewed from the person. Although illustration is omitted for a specific example of this refracting portion, for example, as in the refracting portion in Patent Document 1, each tip portion of two insulating rods is divided into two, and a shaft support portion having a convex shape in front view is provided on one side. In addition, a shaft support portion having a concave shape in front view that can support the shaft is provided on the other side, and a structure in which these unevennesses are engaged while supporting a common shaft can be suitably used. In this case, the common axis is arranged so as to be parallel to the plane of the fan-shaped plate body.

  As described above, since the indirect hot wire gripping tool of the present invention has the insulating rods connected to the pair of gripping pieces, respectively, compared to the case of using the conventional indirect hot wire gripping tool having one insulating rod. The operator can carry out the indirect hot-line work easily and reliably. In addition, by using the indirect hot-line gripping tool of the present invention in the embodiment shown in FIGS. 2 to 4, even if the object to be gripped is in a position where it is difficult for the operator to work, Work may be facilitated by utilizing the connecting part, or the connecting part and the refracting part.

  Further, by configuring the indirect hot wire gripping tool of the present invention as described above, the operator operates the two insulating rods in the approaching direction to open the pair of gripping pieces, and the two insulating rods. There is an advantage that it is possible to operate in any direction of closing the pair of gripping pieces by operating in a separating direction.

  Next, taking an example of an overhead wire protective tube attaching / detaching operation in which one gripping piece needs to be rotated in both directions, an example of using the indirect hot wire gripping tool of the present invention equipped with a dedicated tip tool Will be described. FIG. 5 shows an example of a tip tool that can be attached to the indirect hot wire gripping tool of the present invention, and is dedicated for attaching and detaching an overhead wire protection tube. (A) is a front view, and (b) is a side view. is there. FIG. 6 is a perspective view showing an example of use of the indirect hot-line gripping tool of the present invention equipped with the tip tool. The tip tool 40 shown in FIG. 5 includes half pipes 41 and 43 and bases 42 and 44 provided in directions orthogonal to the respective length directions.

  As shown in FIG. 5, each of the half pipes 41 and 43 has a substantially semicircular cross-sectional shape in a direction perpendicular to the length direction, and a tubular body having a substantially circular cross section is formed by combining them. Is done. The inner diameter when the half pipe bodies 41 and 43 are combined into a tubular shape can be appropriately set within a range smaller than the inner diameter of the protective tube 50 attached to the overhead electric wire W and larger than the outer diameter of the overhead electric wire W. Moreover, the length of the half pipes 41 and 43 can be appropriately set within a common sense range. If the half pipes 41 and 43 can be inserted from one end of the protective pipe 50 of the overhead electric wire W and can be expanded from the split part 51 of the protective pipe 50, the sectional shape is shown in FIG. It is not limited to a substantially semicircular shape as shown.

  As shown in FIG. 5B, one end in the length direction of the half pipes 41 and 43 is R-processed so as to be a substantially semicircular shape when viewed from the side. As a result, the tip tool 40 can be smoothly inserted into the opening of the protective tube 50 as described above.

  One end of each of the base parts 42 and 44 is fixed to the outer peripheral surface of the half pipes 41 and 43, and when the two side edges of the half pipes 41 and 43 are combined to form a tubular shape, the same direction is obtained. Are arranged so as to protrude substantially parallel to each other. The cross-sectional shape orthogonal to the projecting direction of each of the base portions 42 and 44 is rectangular, and a pair of gripping pieces 10 and 11 of an indirect live wire gripping tool toward the half pipes 41 and 43 on the front end surface in the direction. Openings (gripping part accommodating chambers 42a, 44a) for accommodating the gripping parts 10a, 11a are formed. Further, screw holes for pressing the grip portions 10a and 11a inserted into the grip portion receiving chambers 42a and 44a are formed on the side surfaces of the base portions 42 and 44, and bolts 45 and 46 are respectively provided in the respective screw holes. Are screwed together. When the gripping portions 10a and 11a of the pair of gripping pieces 10 and 11 are inserted into the gripping portion storage chambers 42a and 44a, the bolts 45 and 46 are screwed and tightened so that the gripping portions 10a and 11a are accommodated. It is possible to prevent the chambers 42a and 44a from falling off.

  Such a tip tool 40 is attached to the tip of the indirect live wire gripping tool 1 of the present invention, and either the protection tube to be attached to the overhead wire W or the protection tube already attached to the overhead wire. Insert into the end opening. Then, by operating the insulating rods 13 and 14, the protective pipe 50 is maintained in a state where the split portion 51 is expanded, and the protective pipe 50 is attached to the overhead electric wire W or is protected from the overhead electric wire W. The tube 50 can be removed.

  In the indirect hot wire gripping tool of the present invention, since the insulating rods are connected to the pair of gripping pieces at the tips, the operator operates the two insulating rods easily and surely. In addition to being able to perform work, if necessary, by attaching a tip tool to the indirect live wire gripping tool of the present invention, work in either the opening direction or the closing direction of a pair of gripping pieces is also efficient. Can be done.

1, 2 Indirect hot wire gripping tools 10, 11 Grasping piece 12, connecting pins 13, 14 Insulating rods 13a, 14a Plate-like portion (tip portion)
13b, 13c, 14b, 14c Bolt insertion holes 15, 16 Grip portion 18 Water draining rod 19 Connection portion 20 Lock mechanism portion 24, 28 Fan-like plate body portion 25, 29 First through hole 26, 30 Second through hole 31 Bolt 32 Nut 40 Tip tool 41, 43 Half pipe body 42, 44 Base end part 42a, 44a Grasping piece storage chamber 45, 46 Fixing bolt 50 Guard pipe

Claims (3)

A pair of gripping pieces that can be rotated in a direction to come into contact with and away from each other by a connecting pin;
A connecting portion fixed to a base end portion of each gripping piece, and a pair of insulating rods having one end connected to each connecting portion ;
An indirect live-line gripping tool configured such that the angle at which each pair of gripping pieces tilts with respect to the axis of each insulating rod can be changed stepwise via the connecting portion . 2. The indirect active according to claim 1 , wherein each of the insulating rods is provided with a refracting portion configured to be able to refract each pair of gripping pieces in a direction orthogonal to the direction of contact and separation with respect to an axis thereof. Line gripping tool. Each insulating bar which is connected to the gripping pieces of each pair, its intermediate region, according to claim 1 or 2 comprising by interposing a lock mechanism capable of holding the fixed state at an arbitrary position toward each other Indirect hot wire gripping tool.

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